Track input json filename in workflows table (new column)

[ericsong]

I've been keeping track of id -> input_json filenames to keep track of what workflow is doing what. I figured I could try to integrate that process into cromshell.

I know it's possible to grab the input json information through metadata but I wanted something a big quicker and cached so I can view it through list.

I have an alternative implementation that adds an argument to submit which will save the input json filename as the alias. #129.